Pump impeller



FIG. 1 is a perspective view taken from the top and one side of a pump impeller showing my new design;

FIG. 2 is a perspective view taken from the bottom and side opposite that shown in FIG. 1;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a side elevational view taken on the plane indicated by line 4--4 on FIG. 3;

FIG. 5 is a side elevational view taken on the plane indicated by line 5--5 on FIG. 3;

FIG. 6 is a side elevational view taken on the plane indicated by line 6--6 on FIG. 3;

FIG. 7 is a side elevational view taken on the plane indicated by line 7--7 on FIG. 3; and

FIG. 8 is a top plan view thereof. 

The ornamental design for a pump impeller, substantially as shown. 